Since the kernel reading helpers have been extended to not only work
with a kernel blob in C heap, but also work based on a [TypedData]
buffer in the VM heap, access to the [TypedData] buffer is on the hot
path now.
This hot path is slowing things down considerably, in particular due
to NoSafepoingScope's.
This CL removes a critical NoSafepoingScope when accessing the
[TypedData] in read-only mode. It also allows passing in the [Thread]
directly, to avoid TLS lookups.
Issue https://github.com/dart-lang/sdk/issues/32603
Change-Id: I91955bea5cd4eddbbd21c5d3bc6813504c2cece9
Reviewed-on: https://dart-review.googlesource.com/47222
Commit-Queue: Martin Kustermann <kustermann@google.com>
Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
i.e. #ifndef VM_WHATEVER -> #ifndef RUNTIME_VM_WHATEVER
This lets us remove a hack from the PRESUBMIT.py script that existed
for reasons that are no longer valid, and sets us up to add some
presubmit checks for the GN build.
R=asiva@google.com, rmacnak@google.com
Review URL: https://codereview.chromium.org/2450713004 .
This is needed to enable parallel marking/sweeping (and in the future, compilation) tasks to have their own zone allocations and to safely call code that relies on various scoped constructs (stack resources).
The next step is to migrate the scopes like NoSafepointScope, NoHandleScope, etc. from isolate- to thread-based interfaces.
NOTE: This is a copy of issue 1204303003.
BUG=
Review URL: https://codereview.chromium.org//1226403003 .
Refactor all remaning cases where the current zone is used through new(Isolate*) and remove this interface.
Removing this interface is needed to move towards multiple threads per isolate, and also makes the caller more aware of the scope of the zone used, reducing the risk of use-after-free.
Make the current thread and the stack zone created around native/runtime entries directly available in their body, saving an indirection (and optimized away if unused).
R=iposva@google.com
Review URL: https://codereview.chromium.org//982873004
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@44541 260f80e4-7a28-3924-810f-c04153c831b5
This first iteration of Thread just forwards a subset of the BaseIsolate methods.
The plan is to first add Thread/Zone-based interfaces where appropriate, deprecate their Isolate-based versions, and finally remove them once all callsites have been migrated.
This CL only demonstrates a small part of this migration, for BitVector and some of the compiler classes. There are thousands of additional call-sites that will need to be updated.
R=asiva@google.com
Review URL: https://codereview.chromium.org//850183005
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@43073 260f80e4-7a28-3924-810f-c04153c831b5
The isolate was being passed around, even though only its current zone was used.
Pass that zone directly instead, giving two benefits:
1. helps prepare for the upcoming Isolate/Thread split, where "new(isolate)" must go, and
2. saves a pointer indirection at the allocation sites.
Review URL: https://codereview.chromium.org//855533002
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@42935 260f80e4-7a28-3924-810f-c04153c831b5
The purpose of this change is twofold:
1. Source in the bin directory can now use the same assertions as
source in the vm directory. The ASSERT macro used by the code
in runtime/bin was just defined to use assert from the standard
C library.
2. Moving other implementation parts from runtime/vm to
runtime/platform (e.g. classes Monitor and Mutex) for sharing
between runtime/bin and runtime/vm will be easier as these
implementations rely on these assertion macros.
Created two gypi files for the platform directory. One for the
headers and one for the source. The source one is only included
when building the VM library and will be present in libdart.a
when the dart executable is linked.
All the code for asserts is still in the dart namespace.
Also re-arranged the order of includes to be alphabetically in
the files touched.
R=ager@google.com, iposva@google.com
BUG=
TEST=
Review URL: http://codereview.chromium.org//9189003
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@3335 260f80e4-7a28-3924-810f-c04153c831b5
Martin Kustermann